U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Subject "risk assessment" Remove constraint Subject: "risk assessment"
Start Over

Search

23,671  Search Results

« Previous | 1 - 20 of 23,671 |
Number of results to display per page

Search Results

1. Simulation-based vulnerability assessment in transit systems with cascade failures

Author:
Chen, Hongyu; Zhang, Limao; Liu, Qiong; Wang, Hongtao; Dai, Xiaosong
Source:
Journal of cleaner production 2021 v.295 pp. 126441
ISSN:
0959-6526
Subject:
risk assessment,   etc   ; sustainable development; China;     Show all 3 Subjects
Abstract:
... The urban transit system is vulnerable to various types of hazards and failures, where the failure of a system component may lead to a redistribution of the pressure and result in cascade failures. It is of great significance to develop an efficient approach to model and assess the system vulnerability for achieving a sustainable transit system. This research develops a novel holistic approach to ...
DOI:
10.1016/j.jclepro.2021.126441

2. DEDuCT 2.0: An updated knowledgebase and an exploration of the current regulations and guidelines from the perspective of endocrine disrupting chemicals

Author:
Karthikeyan, Bagavathy Shanmugam; Ravichandran, Janani; Aparna, S.R.; Samal, Areejit
Source:
Chemosphere 2021 v.267 pp. 128898
ISSN:
0045-6535
Subject:
risk assessment,   etc   ; chemical safety; cosmetics;     Show all 3 Subjects
Abstract:
... The regulatory assessment of endocrine disrupting chemicals (EDCs) is complex due to the lack of a standardized definition of EDCs and validated testing criteria. In spite of these challenges, there is growing scientific interest in EDCs which has resulted in the rapid expansion of published literature on endocrine disruption upon chemical exposure. Here, we explore how academic research leading t ...
DOI:
10.1016/j.chemosphere.2020.128898

3. Intake of food supplements based on algae or cyanobacteria may pose a health risk due to elevated concentrations of arsenic species

Author:
Cheyns, Karlien; Demaegdt, Heidi; Waegeneers, Nadia; Ruttens, Ann
Source:
Food additives & contaminants 2021 v.38 no.4 pp. 609-621
ISSN:
1944-0057
Subject:
risk assessment,   etc   ; Cyanobacteria; arsenic; risk; toxicity;     Show all 5 Subjects
Abstract:
... Despite the health benefits of food supplements (FS) based on algae or cyanobacteria, the elevated arsenic (As) concentrations in these FS may raise a health concern. In the present study 33 FS containing algae or cyanobacteria were collected and As (species) were analysed to estimate consumer exposure. Based on hazard and exposure data, potential risks were evaluated using inorganic arsenic (Asᵢ) ...
DOI:
10.1080/19440049.2021.1877834

4. A comparison between ES-MDA and restart EnKF for the purpose of the simultaneous identification of a contaminant source and hydraulic conductivity

Author:
Xu, Teng; Gómez-Hernández, J. Jaime; Chen, Zi; Lu, Chunhui
Source:
Journal of hydrology 2021 v.595 pp. 125681
ISSN:
0022-1694
Subject:
risk assessment,   etc   ; aquifers; equations; hydraulic conductivity; pollutants;     Show all 5 Subjects
Abstract:
... Understanding a contaminant source may help in a better management and risk assessment of a polluted aquifer. However, contaminant source information may not be available when a pollutant is detected in a drinking well. The restart ensemble Kalman filter (restart EnKF, also named r-EnKF) has been demonstrated in synthetic and laboratory experiments as an efficient solution for the identification o ...
DOI:
10.1016/j.jhydrol.2020.125681

5. The effects of age, sex, and handling on behavioral parameters in the multivariate concentric square field™ test

Author:
Gore-Langton, Jonathan Kent; Werner, David Francis; Spear, Linda Patia
Source:
Physiology & behavior 2021 v.229 pp. 113243
ISSN:
0031-9384
Subject:
risk assessment,   etc   ; adolescence; adolescents; adults; anxiety; behavior;     Show all 6 Subjects
Abstract:
... The multivariate concentric square field™ (MCSF) is a complex and ethologically relevant apparatus that is designed to measure several behavioral parameters within the same test session including risk-taking, risk-assessment, shelter-seeking (anxiety relieving), exploration, and general activity. While several studies have behaviorally and pharmacologically validated the use of the MCSF in adults, ...
DOI:
10.1016/j.physbeh.2020.113243

6. Development and application of a comparative risk assessment method for ranking chemical hazards in food

Author:
Li, Ying; Liang, Guoxin; Zhang, Lei; Liu, Zhaoping; Yang, Dajin; Li, Jianwen; Sun, Guiju; Zhou, Pingping
Source:
Food additives & contaminants 2021 v.38 no.1 pp. 1-14
ISSN:
1944-0057
Subject:
comparative risk assessment; risk assessment process,   etc   ; Internet; databases; food consumption; models; monitoring; public health; risk; China;     Show all 10 Subjects
Abstract:
... The aim of this study was to develop a comparative risk assessment method to prioritise the public health risks posed by chemical hazards in food. Through a literature review, and in light of expert opinions, a bottom-up, semi-quantitative scoring method was applied to screen the ranking metrics and assign a score. In addition, a metrics system and a ranking model were constructed. The fuzzy compr ...
DOI:
10.1080/19440049.2020.1828627

7. Risk of ventriculoperitoneal shunt infection with coexisting percutaneous endoscopic gastrostomy tube and associated factors

Author:
Tyler, Kevin; Leon, Stuart M.; Lowe, Stephen; Kellogg, Ryan; Lena, Jonathan; Privette, Alicia R.; Eriksson, Evert A.
Source:
Heliyon 2020 v.6 no.3 pp. e03523
ISSN:
2405-8440
Subject:
risk assessment,   etc   ; patients; risk;     Show all 3 Subjects
Abstract:
... Percutaneous endoscopic gastrostomy (PEG) tubes and ventriculoperitoneal shunts (VPS) are commonly placed in neurologically impaired patients. There is concern about safety of VPS coexisting with PEG tubes due to the potential for an increased risk of infection. In this study, we assess the risk of VPS infection and the amount of time between both procedures.Retrospective chart review of patients ...
DOI:
10.1016/j.heliyon.2020.e03523
PubMed:
32211540
PubMed Central:
PMC7082506

8. Hydrolysis of FTOH precursors, a simple method to account for some of the unknown PFAS

Author:
Nikiforov, Vladimir A.
Source:
Chemosphere 2021 v.276 pp. 130044
ISSN:
0045-6535
Subject:
risk assessment,   etc   ; alcohols; fabrics; fluorine; hydrolysis; molecular weight; sodium hydroxide;     Show all 7 Subjects
Abstract:
... There is a growing concern over a suspected presense of unknown perfluoroaliphatic substances (PFAS) in consumer goods and in the environment. Such unknown substances, possibly with high molecular weight, might be precursors of hazardous or controlled known PFAS. Recent studies confirmed that total organic fluorine (TOF) content often can not be explained by the measured target PFAS. One of the su ...
DOI:
10.1016/j.chemosphere.2021.130044

9. Pesticide risk assessment in honeybees: Toward the use of behavioral and reproductive performances as assessment endpoints

Author:
Barascou, Lena; Brunet, Jean-Luc; Belzunces, Luc; Decourtye, Axel; Henry, Mickael; Fourrier, Julie; Le Conte, Yves; Alaux, Cedric
Source:
Chemosphere 2021 v.276 pp. 130134
ISSN:
0045-6535
Subject:
risk assessment,   etc   ; ecotoxicology; pesticides; population dynamics; reproduction; toxicity;     Show all 6 Subjects
Abstract:
... The growing gap between new evidence of pesticide toxicity in honeybees and conventional toxicological assays recommended by regulatory test guidelines emphasizes the need to complement current lethal endpoints with sublethal endpoints. In this context, behavioral and reproductive performances have received growing interest since the 2000s, likely due to their ecological relevance and/or the emerg ...
DOI:
10.1016/j.chemosphere.2021.130134

10. Community effect concentrations as a new concept to easily incorporate community data in environmental effect assessment of complex metal mixtures

Author:
Renaud, Mathieu; da Silva, Pedro Martins; Natal-da-Luz, Tiago; Siciliano, Steven Douglas; Sousa, José Paulo
Source:
Journal of hazardous materials 2021 v.411 pp. 125088
ISSN:
0304-3894
Subject:
risk assessment,   etc   ; dose response; environmental impact; guidelines; soil quality;     Show all 5 Subjects
Abstract:
... The goal of this study was to incorporate community data into the effect assessment of environmental and regulatory relevant metal mixtures. In this experiment three fixed mixture ratios (Canadian soil quality guideline ratio - CSQG; Agricultural, residential and Loamy ratio – ARL; and Sudbury ratio – SUD) were tested in a natural community microcosm with 11 doses for each mixture ratio. The effec ...
DOI:
10.1016/j.jhazmat.2021.125088

11. Ecological vulnerability assessment based on AHP-PSR method and analysis of its single parameter sensitivity and spatial autocorrelation for ecological protection – A case of Weifang City, China

Author:
Hu, Xiaojing; Ma, Chuanming; Huang, Peng; Guo, Xu
Source:
Ecological indicators 2021 v.125 pp. 107464
ISSN:
1470-160X
Subject:
risk assessment,   etc   ; autocorrelation; governance; humans; models; society; China;     Show all 7 Subjects
Abstract:
... With the continuous development of society, the contradiction between human and nature becomes increasingly prominent, and ecological vulnerability assessment is an effective tool to alleviate the contradiction. In this study, AHP-PSR (Analytic Hierarchy Process - Press-State-Response) model was used to assess the ecological vulnerability of Weifang City. PSR model was used to select parameters, A ...
DOI:
10.1016/j.ecolind.2021.107464

12. Processed food classification: Conceptualisation and challenges

Author:
Sadler, Christina R.; Grassby, Terri; Hart, Kathryn; Raats, Monique; Sokolović, Milka; Timotijevic, Lada
Source:
Trends in food science & technology 2021 v.112 pp. 149-162
ISSN:
0924-2244
Subject:
risk assessment,   etc   ; conception; food matrix; palatability; processed foods; product development;     Show all 6 Subjects
Abstract:
... Processed foods are typically praised/revered for their convenience, palatability, and novelty; however, their healthfulness has increasingly come under scrutiny. Classification systems that categorise foods according to their “level of processing” have been used to predict diet quality and health outcomes and inform dietary guidelines and product development. However, the classification criteria ...
DOI:
10.1016/j.tifs.2021.02.059

13. Short-term lab assessments and microcolonies are insufficient for the risk assessment of insecticides for bees

Author:
Van Oystaeyen, Annette; Klatt, Björn K.; Petit, Clément; Lenaerts, Nancy; Wäckers, Felix
Source:
Chemosphere 2021 v.273 pp. 128518
ISSN:
0045-6535
Subject:
risk assessment,   etc   ; acetamiprid; agrochemicals; reproductives; risk; thiacloprid; weight gain;     Show all 7 Subjects
Abstract:
... Risk assessment studies addressing effects of agrochemicals on bumblebees frequently use microcolonies. These are queenless colonies consisting of workers only in which typically one worker will lay unfertilized male-destined eggs. In the first tier of risk assessment for bees, short-term laboratory experiments (e.g. microcolonies) are used, the results of which will determine whether higher tier ...
DOI:
10.1016/j.chemosphere.2020.128518

14. T-wave peak-end interval and ratio of T-wave peak-end and QT intervals: novel arrhythmogenic and survival markers for dogs with myxomatous mitral valve disease

Author:
Vila, B.C.P.; Camacho, A.A.; Sousa, M.G.
Source:
Journal of veterinary cardiology 2021 v.35 pp. 25-41
ISSN:
1760-2734
Subject:
risk assessment,   etc   ; disease progression; echocardiography; electrocardiography; heart rate; lead; mortality;     Show all 7 Subjects
Abstract:
... In the past few years, novel markers such as the interval between the peak and the end of T-wave (Tpte) and Tpte/QT ratio have been shown to have high sensitivity for ventricular arrhythmias and mortality. We analyzed these and other parameters of ventricular repolarization, such as QT interval, QT interval corrected for heart rate (QTc), and QT dispersion (QTd) in dogs with myxomatous mitral valv ...
DOI:
10.1016/j.jvc.2021.02.004

15. Non-targeted analysis and risk assessment of non-volatile compounds in polyamide food contact materials

Author:
Hu, Yajing; Du, Zhenxia; Sun, Xuechun; Ma, Xin; Song, Jingdan; Sui, Haixia; Debrah, Augustine Atta
Source:
Food chemistry 2021 v.345 pp. 128625
ISSN:
0308-8146
Subject:
risk assessment,   etc   ; databases; detection; food chemistry; liquids; polyamides; spectroscopy; toxicology;     Show all 8 Subjects
Abstract:
... Small molecules in food contact materials may migrate into food during their contact. To extensively analyze the migrants, non-targeted screening is needed to detect the migrants. The migrants’ detection is difficult because of the complexity and the trace amount of the migrants. In this work, the dissolution precipitation method was used to extract small molecules in Polyamide (PA) kitchenware. T ...
DOI:
10.1016/j.foodchem.2020.128625

16. Accurate and ultrasensitive determination of 72 parent and halogenated polycyclic aromatic hydrocarbons in a variety of environmental samples via gas chromatography–triple quadrupole mass spectrometry

Author:
Sei, Kento; Wang, Qi; Tokumura, Masahiro; Miyake, Yuichi; Amagai, Takashi
Source:
Chemosphere 2021 v.271 pp. 129535
ISSN:
0045-6535
Subject:
risk assessment,   etc   ; air; chickens; detection limit; dust; ionization; sediments;     Show all 7 Subjects
Abstract:
... Polycyclic aromatic hydrocarbons (PAHs) and their halogenated derivatives (XPAHs) are ubiquitous in various environmental media. Analytical problems, however, make it difficult to accurately determine their concentrations. To develop a satisfactory analytical method suitable for a diversity of PAHs and XPAHs in multiple environmental samples, we evaluated three commercial analytical columns (DB-5M ...
DOI:
10.1016/j.chemosphere.2021.129535

17. Risk assessment and hotspots identification of heavy metals in rice: A case study in Longyan of Fujian province, China

Author:
Lü, Qixin; Xiao, Qingtie; Wang, Yujie; Wen, Huanhuan; Han, Bolun; Zheng, Xinyu; Lin, Ruiyu
Source:
Chemosphere 2021 v.270 pp. 128626
ISSN:
0045-6535
Subject:
risk assessment,   etc   ; carcinogenicity; case studies; pollution; remediation; rice; risk; China;     Show all 8 Subjects
Abstract:
... The potential threats of heavy metals in rice have attracted increasing attention worldwide. In this study, we assessed the pollution status and health risk of rice collected from Longyan in Fujian, China. Meanwhile, we explored the spatial pattern and hotspots of those metals. The results showed that the average concentrations of Cd, Hg, As, Pb, Cr, Ni, Cu, and Zn in rice were 0.064, 0.002, 0.464 ...
DOI:
10.1016/j.chemosphere.2020.128626

18. A hybrid risk prioritization method based on generalized TODIM and BWM for Fine-Kinney under interval type-2 fuzzy environment

Author:
Tang, Jing; Liu, Xinwang; Wang, Weizhong
Source:
Human and ecological risk assessment 2021 v.27 no.4 pp. 954-979
ISSN:
1549-7860
Subject:
risk assessment,   etc   ; environmental assessment; humans; models; prioritization; risk;     Show all 6 Subjects
Abstract:
... The risk prioritization process is one of the most crucial steps for risk evaluation of potential hazards. The Fine-Kinney method has been commonly applied to controll risks in practice, while the classical Fine-Kinney has limitations in the determination of important degrees of risk parameters. In addition, current risk prioritization approaches for Fine-Kinney overlook the bounded rational behav ...
DOI:
10.1080/10807039.2020.1789840

19. An all-in-one tool for multipurpose ecological risk assessment and management (MeRAM) of chemical substances in aquatic environment

Author:
Lin, Bin-Le; Meng, Yaobin; Kamo, Masashi; Naito, Wataru
Source:
Chemosphere 2021 v.268 pp. 128826
ISSN:
0045-6535
Subject:
risk assessment,   etc   ; aquatic environment; environmental assessment; labor; risk;     Show all 5 Subjects
Abstract:
... A quality-assured ecological risk assessment (ERA) requires enormous resources (time and labor) in collection/assessment of hazard data, as well as considerable expertise to interpret the risk. The ERA of chemicals is thereby considered difficult or impossible for those with little assessment experience and cumbersome or complicated for practitioners. To meet the concerns regarding ERA and acceler ...
DOI:
10.1016/j.chemosphere.2020.128826

20. Challenges in the quality of herbal medicinal products with a specific focus on contaminants

Author:
Steinhoff, Barbara
Source:
Phytochemical analysis 2021 v.32 no.2 pp. 117-123
ISSN:
0958-0344
Subject:
risk assessment,   etc   ; aflatoxins; guidelines; humans; industry; pesticides; phytochemicals;     Show all 7 Subjects
Abstract:
... BACKGROUND: The complex regulatory framework for the quality of herbal medicinal products, in particular with regard to potential contaminants, consists of legal provisions including Pharmacopoeia requirements, relating to limits as well as in most cases to methods for determination. OBJECTIVE: This review intends to provide an overview on the legal requirements for testing potential contaminants ...
DOI:
10.1002/pca.2879